Dr. Marius J. Katilius, MD
- Medicare services, 2024
- 380
- Medicare patients, 2024
- 256
- Part D claims, 2024
- 96
- Hospital affiliations
- 4
- Industry payments
- $755
- Practice address
- 998 129th Infantry Drive, Joliet, IL 60435
- Practice phone
- Call (815) 744-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Amsurg Surgery Center
Surgery Center - Medicare-Certified · Joliet, Illinois
Find Dr. Katilius' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Marius J. Katilius is a general surgeon in Joliet, Illinois
Dr. Katilius practices at Amsurg Surgery Center in Joliet, Illinois.
Dr. Katilius' NPI, 1659346583, was assigned on February 22, 2006. Dr. Katilius holds Illinois license 036102938.
- NPI
- 1659346583NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335209139
- NPI enumeration date
- February 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (815) 744-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marius J. Katilius practices at Amsurg Surgery Center in Joliet, Illinois
Dr. Katilius' primary practice is Amsurg Surgery Center, at 998 129th Infantry Drive, Joliet, IL 60435. The practice phone is (815) 744-3000.
- Amsurg Surgery Center998 129th Infantry Drive, Joliet, IL 60435Phone(815) 744-3000
Source: Dmand AI Affiliation Data
Dr. Marius J. Katilius is affiliated with 9 sites of care and 6 medical groups
Dr. Katilius' primary practice is Amsurg Surgery Center in Joliet, Illinois. Dr. Katilius is also affiliated with Saint Joseph Medical Center. The medical group on file is DuPage Medical Group. Dmand AI also links Dr. Katilius to 3 more hospitals, 5 medical groups and 4 group practices and clinics, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Marius J. Katilius' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Katilius practices, 9 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Amsurg Surgery Center | Available with a free account |
| +8 more sites and 5 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Marius J. Katilius is one of 1,217 general surgeons in Illinois
Surgery is Dr. Katilius' primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Katilius is licensed in Illinois.
Specialties and state licenses
- Surgery, IllinoisPrimary
General surgeons near Dr. Katilius
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Marius J. Katilius billed Medicare for 380 services in 2024
CMS data shows 380 Medicare services from Dr. Katilius across 13 procedure codes in 2024, for 256 Medicare patients. Medicare paid $33,394 for them.
Dr. Katilius' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3372024: 30410%
- Surgery
- 2023: 632024: 653%
- Other services
- 2023: 492024: 1178%
Where Dr. Katilius' Medicare services took place, 2024
- In an office14939%
- In a facility23161%
Dr. Katilius compared with the Illinois median for general surgeons, 2024
- Dr. Katilius
- Illinois median
- Medicare services
- 380vs 19496% above
- Medicare patients
- 256vs 14478% above
- Part D claims
- 54vs 2893% above
Medians across 1,031 general surgeons in Illinois with Dmand AI profiles that report each measure.
Dr. Katilius' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Katilius and other general surgeons in Illinois.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marius J. Katilius treated 256 Medicare patients in 2024, average age 74
CMS counts 256 Medicare patients who saw Dr. Katilius in 2024. The largest group is 65 to 74, with 106 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 15% are also on Medicaid. Their average risk score is 1.77, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Katilius' median patient age at 64, with 43% women.
Dr. Katilius' Medicare patients by age, 2024
Dr. Katilius' Medicare patients by sex, 2024
- Women12248%
- Men13452%
Chronic conditions among Dr. Katilius' Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Diabetes43%
- Chronic kidney disease38%
- Ischemic heart disease38%
- Anxiety34%
- Heart failure32%
Share of Medicare patients with each condition. A patient can have several.
Dr. Katilius' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women43%
- Men56%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Marius J. Katilius wrote 96 Medicare Part D claims in 2024
In 2024, Dr. Katilius wrote 96 Medicare Part D claims for 54 patients. 96% of them were for generic drugs. CMS names the drug for 54 of them, across 2 drugs with 11 or more claims each, at $631 in total drug cost. In 2023, CMS named 65 claims across 2 drugs.
Dr. Katilius' Part D claims by kind of drug, 2024
- Generic92 claims96%
- Brand-name and other4 claims4%
Dr. Katilius' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Katilius' Part D claims, 2024
- Opioids30%29 of 96 claims
- Antibiotics16%15 of 96 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 652024: 5417%
Drugs named by CMS: 2 in 2024, 2 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Marius J. Katilius ranks in the 58th percentile for colonoscopy in Medicare
Dr. Katilius accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 38 procedures of colonoscopy by Dr. Katilius, more than 58% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Katilius ranks in Medicare procedure volume
- Colonoscopy
- 58th percentile38 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 47th percentile16 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Hernia repair (minimally invasive): 1 to 10 procedures (CMS shows small counts as a range)
Mastectomy: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Marius J. Katilius received $755 in industry payments from 2016 to 2024
CMS Open Payments shows 30 general payments to Dr. Katilius from 16 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Intuitive Surgical, Inc. paid the most, $261.
General payments to Dr. Katilius by program year, 2016 to 2024
Companies that paid Dr. Katilius the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Marius J. Katilius's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Marius J. Katilius
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Marius J. Katilius' NPI number?
Dr. Marius J. Katilius' NPI number is 1659346583. It was assigned on February 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marius J. Katilius?
Dr. Marius J. Katilius is a general surgeon in Joliet, Illinois. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Marius J. Katilius practice?
Dr. Katilius practices at 998 129th Infantry Drive, Joliet, IL 60435. Dr. Katilius' primary practice is Amsurg Surgery Center in Joliet, Illinois. Dmand AI also links Dr. Katilius to 3 hospitals, 5 medical groups and 4 group practices and clinics.
What is Dr. Marius J. Katilius' office phone number?
The practice phone on file for Dr. Katilius is (815) 744-3000.
What is Dr. Marius J. Katilius' medical license number?
Dr. Katilius holds Illinois license 036102938.
Which hospitals is Dr. Marius J. Katilius affiliated with?
Dr. Katilius is affiliated with Saint Joseph Medical Center. Dmand AI links Dr. Katilius to 3 more hospitals.
What medical group is Dr. Marius J. Katilius part of?
Dr. Katilius is linked to DuPage Medical Group. Dmand AI links Dr. Katilius to 5 more medical groups.
Does Dr. Marius J. Katilius accept Medicare?
Yes. CMS data shows Dr. Katilius billed Medicare for 380 services in 2024, and Dr. Katilius accepts Medicare assignment.
How many Medicare patients does Dr. Marius J. Katilius see?
CMS counts 256 Medicare patients who saw Dr. Katilius in 2024, with an average age of 74.
What services does Dr. Marius J. Katilius bill to Medicare?
In 2024, Dr. Katilius' most billed Medicare services were office visit, established patient (99213), hospital inpatient care (99232) and office visit, new patient (99203).
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What drugs does Dr. Marius J. Katilius prescribe most?
In 2024 Medicare Part D data, Dr. Katilius' most prescribed drugs by claims were Pantoprazole Sodium and Hydrocodone-Acetaminophen.
Has Dr. Marius J. Katilius received payments from drug or device companies?
CMS Open Payments shows $755 in general payments to Dr. Katilius from 16 companies from 2016 to 2024. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Marius J. Katilius been practicing?
Dr. Katilius graduated from medical school in 1994, 32 years ago.
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